because your behavior is an anonymous class it keeps a reference to
its parent - the visitor. visitors are not serializable. the easiest
way to fix it is to make the behavior you are adding an inner class of
the page.
-igor
On Tue, Aug 17, 2010 at 8:05 AM, allgo <soumya_...@yahoo.co.in> wrote:
>
> Hi fellow wicket users,
> I am a user of Wicket 1.4.8
> I am trying to use a TabbedPanel inside which there are several individual
> Panels. Now one of the Panel has a form with quite a few RadioChoices and
> DropDownChoice objects. I am updating a top level flag whenevr there is any
> change on any form element to trigger a pop-up asking the user to save
> un-saved changes on the page when they try to move away from that tabbed
> panel to soem other page.
>
> Since there are multiple form elements I am using a onBeforeRender() method
> in the ChildPanel class and applying AjaxFormBehaviour on all child elements
> at one place to avoid redundancy of code for each radio element or dropdown
> element as follows -
>
> protected void onBeforeRender() {
>
> if (!behaviorAssigned) {
> behaviorAssigned = true;
>
> visitChildren(new IVisitor<Component>() {
>
> public Object component(Component component) {
> if (component instanceof RadioChoice) {
> component.add(new
> AjaxFormSubmitBehavior("onclick") {
>
> �...@override
> protected void
> onError(AjaxRequestTarget target) {
> // TODO
> Auto-generated method stub
>
> }
>
> �...@override
> protected void
> onSubmit(AjaxRequestTarget target) {
>
> parent.setPageChanged(Boolean.TRUE);
>
> }
>
>
> });
> }
> if (component instanceof
> DropDownChoice<?>) {
> component.add(new
> AjaxFormComponentUpdatingBehavior(
> "onchange") {
> protected void
> onUpdate(AjaxRequestTarget target) {
>
> parent.setPageChanged(Boolean.TRUE);
> }
> });
> }
> return null;
> }
>
> });
> super.onBeforeRender();
> }
>
> Problem is whenever the Panel is loaded I am getting loads of
> WicketNotSerializableExceptions -
>
>
>
> org.apache.wicket.util.io.SerializableChecker$WicketNotSerializableException:
> Unable to serialize class: com.mycompany.test.calendar.ChildPanel$7
> Field hierarchy is:
> 5 [class=com.mycompany.test.HomeBasePage, path=5]
> private java.lang.Object org.apache.wicket.MarkupContainer.children
> [class=[Ljava.lang.Object;]
> java.lang.Object org.apache.wicket.Component.data[10]
> [class=com.mycompany.test.HomeBasePage$6, path=5:tabs]
> private java.lang.Object org.apache.wicket.MarkupContainer.children
> [class=[Ljava.lang.Object;]
> private org.apache.wicket.markup.html.link.PopupSettings
> org.apache.wicket.markup.html.link.Link.popupSettings[1]
> [class=com.mycompany.test.settings.SettingsLazyPanel, path=5:tabs:panel]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children
> [class=com.mycompany.test.settings.SettingsLazyPanel$1,
> path=5:tabs:panel:grid]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children
> [class=com.mycompany.test.settings.SettingBasePanel,
> path=5:tabs:panel:grid:content]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> private
> org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow$WindowClosedCallback
> org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow.windowClosedCallback[1]
> [class=com.mycompany.test.settings.SettingBasePanel$6,
> path=5:tabs:panel:grid:content:tabs]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> private
> org.apache.wicket.markup.html.link.PopupSettings
> org.apache.wicket.markup.html.link.Link.popupSettings[1]
> [class=com.mycompany.test.calendar.ChildPanel,
> path=5:tabs:panel:grid:content:tabs:panel]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> java.lang.Object
> org.apache.wicket.Component.data[2]
> [class=org.apache.wicket.markup.html.WebMarkupContainer,
> path=5:tabs:panel:grid:content:tabs:panel:dayMonthGrid]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children
> [class=com.mycompany.test.calendar.ChildPanel$1,
> path=5:tabs:panel:grid:content:tabs:panel:dayMonthGrid:dayMonthView]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children[0]
> [class=org.apache.wicket.markup.html.list.ListItem,
> path=5:tabs:panel:grid:content:tabs:panel:dayMonthGrid:dayMonthView:0]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children
> [class=com.mycompany.test.calendar.ChildPanel$1$1,
> path=5:tabs:panel:grid:content:tabs:panel:dayMonthGrid:dayMonthView:0:dayMonthButton]
> private final
> org.apache.wicket.markup.html.WebMarkupContainer
> com.mycompany.test.calendar.ChildPanel$1$1.val$availableBox
> [class=org.apache.wicket.markup.html.WebMarkupContainer,
> path=5:tabs:panel:grid:content:tabs:panel:availableBox]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> java.lang.Object
> org.apache.wicket.Component.data[1]
> [class=org.apache.wicket.markup.html.form.Form,
> path=5:tabs:panel:grid:content:tabs:panel:availableBox:form]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children[0]
> [class=org.apache.wicket.markup.html.form.RadioChoice,
> path=5:tabs:panel:grid:content:tabs:panel:availableBox:form:availableOption]
> java.lang.Object
> org.apache.wicket.Component.data [class=[Ljava.lang.Object;]
> java.lang.Object
> org.apache.wicket.Component.data[0][1]
> [class=com.mycompany.test.calendar.ChildPanel$7$1]
> final
> com.mycompany.test.calendar.ChildPanel$7
> com.mycompany.test.calendar.ChildPanel$7$1.this$1
> [class=com.mycompany.test.calendar.ChildPanel$7] <----- field that is not
> serializable
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:346)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:392)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> at
> org.apache.wicket.util.io.SerializableChecker.writeObjectOverride(SerializableChecker.java:684)
> at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298)
> at
> org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory$2.writeObjectOverride(IObjectStreamFactory.java:129)
> at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298)
> at
> org.apache.wicket.util.lang.Objects.objectToByteArray(Objects.java:1124)
> at
> org.apache.wicket.protocol.http.pagestore.AbstractPageStore.serializePage(AbstractPageStore.java:203)
> at
> org.apache.wicket.protocol.http.pagestore.DiskPageStore.storePage(DiskPageStore.java:840)
> at
> org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.put(SecondLevelCacheSessionStore.java:332)
> at org.apache.wicket.Session.requestDetached(Session.java:1400)
> at org.apache.wicket.RequestCycle.detach(RequestCycle.java:1176)
> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1454)
> at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
> at
> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:312)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
> at java.lang.Thread.run(Thread.java:595)
> Caused by: java.io.NotSerializableException:
> com.mycompany.test.calendar.ChildPanel$7
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
>
>
>
>
>
> However when I add the AjaxFormSubmitBehaviour to individual form components
> and comment out the onBeforeRender it works fine without any errors..
> any clue guys?
>
> Cheers,
> Allgo
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/AjaxFormSubmitBehavior-causes-serialization-issues-inside-onBeforeRender-tp2328509p2328509.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
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